KR100848311B1 - Caliper of disk brake for vehicle and the manufacturing method of caliper housing - Google Patents

Abstract

A caliper of a disk brake for a vehicle and a manufacturing method of a caliper housing are provided to smoothly perform heat emission and to improve the reliability of braking operation by allowing a pad spring, which compresses an upper end portion of a pad plate downward, to be formed with a fin shape. A caliper of a disk brake for a vehicle comprises first and second pad plates(40a,40b) having a friction pad(42) attached to opposite sides of a disk, and first and second compression units installed on both sides of a caliper housing(10). The caliper housing includes a space portion(18) having a middle part thereof being opened to discharge heat to the exterior and to install the pad plates while allowing the disk to be inserted into the space. The space portion of the caliper housing is provided at an upper portion thereof with a connection member(50), which is bolted to connect the first and second compression units with each other.

Description

Caliper of disk brake for vehicle and the manufacturing method of caliper housing

The present invention relates to a method for manufacturing a caliper and a caliper housing of a vehicle brake, and more particularly, by forming a caliper housing integrally provided with both sides of the friction pad pressing means to prevent the caliper from being opened by the pressure applied to both sides of the caliper. The pad spring, which reduces braking wear of the friction pad, improves braking force, and improves anti-shake and restoring force, is formed in a pin shape to smoothly discharge heat generated from the friction pad, so that braking reliability is generated and generated in a cylinder. The present invention relates to a method for manufacturing a caliper and a caliper housing of a vehicle brake to facilitate the discharge of air.

In general, a brake system is classified into a main brake mainly used for driving and a parking brake used for parking a car, and the main brake is configured to brake the hydraulic pressure generated by the operation of the brake pedal. The hydraulic brakes are classified into air brakes that generate the braking force by using the pressure of the compressed air and the compressed air, which are used in the case of requiring a large braking force such as a large vehicle, and the hydraulic brakes are rotated together with the wheels. On both sides of the disc there is a disc brake adapted to brake by pressing the brake pad by hydraulic pressure.

Here, the general configuration of the caliper in the disc brake is formed in a saddle shape, the first and second caliper housings to be attached to the knuckle spindles, the pressing means which is provided on both sides of the caliper housing to advance and retract by hydraulic pressure, the respective pressurization Conveying hose which is installed externally for supplying hydraulic pressure to the means, and the first and second pad plates with friction pads attached to each side of the disk and attached to both sides of the disk to generate friction force to brake the disk. It is.

In addition, a piston boot and an oil seal are respectively provided to prevent foreign substances such as moisture or dust from flowing into the pressurizing means, and the two caliper housings are bolted together.

Therefore, when the driver presses the brake pedal, the hydraulic pressure of the brake oil flows into the pressurizing means to advance the piston of the pressurizing means to brake the disk in which the friction pad is integrally rotated with the wheel.

At this time, it is common that the pressing means is provided with two or four. If four pressing means are provided, four feed hoses will have to be interconnected to interconnect them. In this case, it is natural that the speed at which the hydraulic pressure supplied to each pressurizing means is changed is wrong. As a result, the abrasion of the friction pads receding by the pressurizing means is generated, as well as the abrasion of the disk and the noise. It caused a drop.

In view of this, a disc brake for a vehicle (Patent Publication No. 10-2007-0040970) has been devised by the present inventors, and as shown in FIG. 12, the pressure means provided in the two caliper housings 10a and 10b provides a hydraulic passage and a connection member. The hydraulic pressure supplied by communicating with each other through 50 can be supplied to each pressurizing means more quickly and evenly. The present invention is based on the above-described technical contents. In suggesting a caliper.

According to the present invention, the friction pad pressing means is formed integrally with one body of the caliper housing provided on both sides to prevent the two sides of the caliper from being pressed by the pressure to press the two sides of the disk to the friction pad to perform braking. By improving the braking force by reducing uneven wear of the friction pad and by pressing down the upper end of the pad plate, the pad spring is formed in the shape of a pin to form a pin shape in the friction pad portion located between the friction pad and the disc. The present invention provides a method for manufacturing a brake and a caliper housing for a vehicle, which is configured to smoothly discharge heat to have braking reliability, and to easily discharge air generated in a cylinder provided in a caliper housing and to have an air outlet having stability.

The present invention provides a first pad plate and a second pad plate having friction pads attached to both sides of the disk, and a caliper housing fixed to the vehicle body so as to support the two pad plates and the two pad plates to be pressed toward the disk. In a caliper of a brake for a vehicle including first and second pressing means provided on both sides of the caliper housing, the caliper housing discharges heat to the outside when a friction force is generated at the center, and installs two pad plates and enters a disk. The upper and lower spaces of the central portion is formed so as to enable the upper portion of the caliper housing, the connecting member for connecting the first and second pressing means to each other is bolted to the first, second pressing means on both sides of the caliper housing The vehicle is formed integrally with the body of the first and second pressing operation unit and the two ends connected frame is provided It characterized by the production method of the caliper and the caliper housing of the disc brake.

According to the present invention as described above, the friction pad pressurizing means has a first and a second pressurizing means having first and second pressurizing means formed at both sides, and both ends of the frame are integrally formed with one body to pressurize both sides of the caliper. To prevent braking and reduce braking force of the friction pad to improve braking force, and to prevent vibration and restoring force, the pad spring is formed in a pin shape to maximize the heat dissipation space, The discharge is made smoothly so that the braking reliability is achieved and the caliper housing Since the discharge plug for discharging air in the cylinder provided in the first and second pressure means is formed in a wrench bolt type and is not exposed to the outside, there is no fear of damage due to external impact or the like, and is perpendicular to the inside of the coupling hole of the discharge plug. An air discharge hole is formed at a subsequent side, so that the oil discharged with the air can safely work without being ejected to the face of the worker.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The caliper of the vehicular disk brake of the present invention includes a first pad plate 40a, a second pad plate 40b, and two pad plates 40a having friction pads 42 attached to both sides of the disk 80 in contact with both sides. A caliper housing 10 fixed to the vehicle body to support the 40b and two pad plates 40a and 40b provided at both sides of the caliper housing 10 so as to press the two pad plates 40a and 40b toward the disk 80. The pressure is largely divided into the first and second pressing means (30a, 30b).

The caliper housing 10 has a space portion 18 having a central portion opened up and down so as to discharge heat to the outside when a friction force is generated at the center and to allow installation of two pad plates 40a and 40b and entry of the disk 80. Is formed and the connecting member 50 for interlocking the first and second pressing means (30a, 30b) to each other above the space portion 18 of the caliper housing (10) of the caliper housing 10 The first and second pressure-operating parts 20a and 20b and the connecting frames 22 having both ends are provided in one body in one body with the first and second pressure means 30a and 30b on both sides.

The pad spring 60 is coupled to the lower end of the connecting member 50 to press the first pad plate 40a and the second pad plate 40b downward, but the pad springs 60 are provided in two, and the wire It is formed into a pin shape by bending the one end portion is formed to be coupled to the bent portion 64 is coupled to the fixing piece 54 of the lower portion of the connecting member 50 to attach and attach the upper surface of the caliper housing 10 is formed In addition, the other end portion is formed of a pressing portion 66 formed at an inclination angle inward and downward and bent at the end so as to press the pad plates 40a and 40b downward and also press outward.

The pad plates 40a and 40b are installed to move toward and away from the disk 80 in a state in which the rotation of the pad plate 40a and 40b is placed in the supporting portion provided at the inner side of the caliper housing 10 so as to limit the rotation thereof. One surface of each of the pad plates 40a and 40b is provided with a conventional friction pad 42 to brake the disk 80 when the pad plates 40a and 40b are pressed.

The first pressing means 30a is provided inside one side of the caliper housing 10 and the second pressing means 30b is provided on the other side of the caliper housing 10. In the drawing, the first and second pressing means 30a and 30b are provided. Two pressurizing means are formed in pairs and in the form of being in communication with each other by the hydraulic passage 14, respectively.

The connecting member 50 is attached to the upper surface space portion 18 of the caliper housing 10, the transfer portion 52 corresponding to the hydraulic passage 14 of the caliper housing 10 is formed therein and the first The second pressurizing means 30a and 30b communicate with each other. That is, the connecting member 50 is connected to the first and second pressing means (30a, 30b) provided in the interior of the caliper housing 10 to communicate with each other and to support both sides of the caliper housing (10) Functioning but the connecting portion of the connecting member 50 located in the first pressing means (30a) is in close contact and the connecting portion of the connecting member 50 located in the second pressing means (30b) is in close contact with the oil ring (56) is bolted to the structure to maintain the coupling force of the upper and side, and the hydraulic pressure is transferred from the first pressing means (30a) toward the second pressing means (30b) to pressurize the cylinder 32 Even though the connection part of the connection member 50 is opened by the pressure generated at the time, the oil is prevented from being discharged through the connection part of the connection member 50, which is connected to the connection member 50. If the site is opening action occurs first The side close contact of the connecting member 50 located in the pressing means 30a has a higher tension than the close contact structure of the upper surface of the connecting member 50 located in the second pressing means 30b. 30b) the connecting portion of the connecting member 50 is opened but the connecting portion of the second pressing means (30b) is in the upper sliding state in the form of sliding in the horizontal sliding form even if the position of the oil ring 56 is fitted This will prevent the oil from releasing.

The hydraulic passage 14 formed in the caliper housing 10 is generally drilled by using a mechanism for forming a hydraulic passage in a metal material, and the first and second sides of the caliper housing 10 are formed at the inner middle of the caliper housing 10. 2 It may be drilled obliquely toward the cylinder 32 of the pressing means (30a, 30b). The first and second pressing means 30a and 30b communicate with each other by attaching the connecting member 50 having the transfer part 52 corresponding to the hydraulic passage formed as described above.

The pad spring 60 is provided in two and presses the upper end surfaces of the first pad plate 40a and the second pad plate 40b, but is formed in a pin shape by bending an iron wire, and one end thereof is the caliper housing 20a. An engaging portion 64 bent orthogonally be formed to be coupled to the fixing piece 54 at the bottom of the connecting member 50 to attach and attach the upper surface, and the other end is inclined downward and is bent inwardly. It is formed of 66 to press each pad plate 40a, 40b downward, and also press outward.

The pad spring 60 may provide excellent restoring force by pressing the pad plates 40a and 40b downward to prevent shaking and to press outward.

A connecting member 50 is attached to an upper end of the space 28 of the caliper housing 20a, and both ends of the transfer part 52 formed inside the connecting member 50 are the first and second pressing means (). Are respectively connected to the hydraulic passages 22a of the caliper housings 20a communicating with each other.

A first pad plate 40a and a second pad plate 40b are attached to both inner sides of the two caliper housings 10, respectively, and a frictional force is applied to the disk 80 inside the two pad plates 40a and 40b. Friction pads 42 are provided to provide each. In addition, a pad spring 60 for pressing downward from the inside to the outside of the two pad plates 40a and 40b is supported by the connecting member 50 and the spring support pin 62.

First and second pressing means (30a, 30b) is provided in both sides of the caliper housing 10, the pressing means (30a, 30b) are two pad plates (40a, 40b) to the disk 80 It is provided for advancing to the side and consists of the conventional piston 34 and the cylinder 32. As shown in FIG. In this configuration, when a predetermined hydraulic pressure flows into the compression space 36 formed through the cylinders 32 and the pistons 34, the two piston plates 40a and 40b move while the pistons 34 move toward the disk 80. ) Is to pressurize.

In addition, one side of the caliper housing (20a) is provided with an injection portion 12 for injecting hydraulic pressure, the other side is provided with an air discharge hole 16, the air discharge hole 16 is Of the caliper housing (10) A discharge plug 70 for discharging air in the cylinder 32 provided in the first and second pressing means 30a and 30b is formed in a wrench bolt shape and is coupled to the coupling hole 32 so as not to be exposed to the outside. The plug 70 has an inner contact surface 70a having a small outer diameter and an outer connection surface 70b formed therein, and an inner side of the coupling hole 72 to which the opening and closing end 71 of the tip of the contact surface 70a is coupled. The air discharge hole 16 is formed in the side part orthogonal to this, and it is possible to discharge air.

In the case of the cylinder 32 of the first pressing means 30a corresponding to the inside of the vehicle body, the air discharge hole 16 is formed laterally to be discharged inward and the second pressing means 30b corresponding to the outside of the vehicle body. In the case of the cylinder 32) is formed downward so that the oil discharged with the air during the air discharge process is not ejected to the face of the operator.

On the other hand, the caliper housing 10 of the present invention, the first and second pressure-operating parts (20a, 20b) and both ends of the connection frame 22 is provided with first and second pressure means (30a, 30b) on both sides Step (S1) of forming a unitary body of one body, and the through-hole 19 in the side of the injection portion 12 of the first pressing operation portion (20a) to form the first, second pressing operation portion (20a) ( 20b) penetrating the inside of the cylinder 32 and the hydraulic passage 14 respectively provided (S2), and processing the inner diameter of both cylinders 32 through the through hole (S3), and Forming an inclined surface 191 and a screw engaging portion 192 tapered in the direction of the injection portion 12 in the through hole 19 (S4), and the cylinder plug 193 inside the through hole 19; The first and second pressing means (30a, 30b) are provided at both sides of the caliper housing (10) manufactured by the step (S5) of screwing and welding the outer connection to be sealed to the inside of the cylinder , 2 pressurizing parts 20a, 20b Both ends connected hureim 22 is formed integrally with a one-body.

According to the present invention, the first pad is disposed on both sides of the disk 80 so as to be in close contact with the vehicle disk 80 to perform a braking action, and the first pad having the friction pad 42 attached to the disk 80 in contact with the disk 80. The disk 40a and the second pad plate 40b, the caliper housing 20a fixed to the vehicle body to support the two pad plates 40a and 40b, and the two pad plates 40a and 40b are mounted on the disc. It is composed of pressing means (30a, 30b) provided on both sides of the caliper housing (20a) so as to press toward the (80).

Briefly looking at the operation relationship of the disc brake of the present invention configured as described above, when the driver presses the brake pedal, the hydraulic pressure of the brake oil is introduced into the first pressing means 30a through the injection portion 12 and at the same time the connection member 50 The disk (80) in which the friction pad (42) is integrally rotated with the wheel as the piston (34) of the pressing means (30a) and (30b) moves forward while being rapidly moved to the second pressing means (306) through the conveying part (52). Braking).

At this time, since the caliper housing 10 having the friction pad 42 pressurizing means of the present invention is integrally formed with one body, both sides of the disk 80 are brought into close contact with the friction pad 42 to be braked. The caliper housing 10 is prevented from being spread by the pressurized pressure to reduce the wear of the friction pad 42 to improve the braking force, which is conventionally configured on both sides of the caliper housing 10. Since the first pressing means 30a and the second pressing means 30b are formed in the divided components, respectively, and are coupled to each other by bolts, the bolt coupling portions are opened or deformed at the time of pressing, so that both sides of the disk 80 are deformed. Since only one side of the friction pad 42 is in close contact with each other, the braking force may be solved.

In addition, the connecting member 50 attached to the space portion 18 of the caliper housing 10 performs a function of more firmly supporting both sides of the caliper housing 10, and the hydraulic pressure is supplied through the injection portion 24. At the same time as the first pressure means (30a) and at the same time through the transfer portion 52 of the connecting member 50 to perform the function to be moved to the second pressure means (3b) together.

In addition, the upper side of the two pad plates (40a, 40b) provided to press the disk 80 is always pressed downward and outward to the pad spring 60 to reduce the shaking phenomenon and to have excellent restoring force is provided with a pad Since the heat dissipation space of the disk and the disk is secured to the maximum, the heat is effectively released, which greatly improves the braking reliability.

In addition, in the case of the cylinder 32 of the first pressing means 30a corresponding to the inside of the vehicle body as shown in FIG. 7, the air discharge hole 16 of the present invention is formed laterally so as to be discharged inward and out of the vehicle body. In the case of the cylinder 32 of the second pressing means (30b) corresponding to the side is formed downward so that the oil discharged with the air in the process of air discharge by turning the discharge plug 70 is not ejected to the face of the operator You can work safely.

In the above, the present invention has been described with reference to the above embodiments, but various modifications are possible within the technical scope of the present invention.

1 is a perspective view showing a caliper of a brake according to the present invention

2 (a) (b) is a plan view and a bottom view schematically showing a caliper of the brake according to the present invention

Figure 3 is a block diagram showing a caliper housing and the connection member of the present invention

Figure 4 is a plan view showing a caliper housing of the present invention

Figure 5 is an exemplary side view showing a pad spring according to the present invention

Figure 6 is a bottom view showing the mounting state of the pad spring according to the present invention

Figure 7 is a side view of the caliper showing the air discharge hole of the present invention

Figure 8 (a) (b) is an exemplary cross-sectional view showing the air discharge hole opening and closing state by the discharge plug of the present invention.

Figure 9 is a side cross-sectional view of the brake caliper of the present invention

Figure 10 (a) (b) is an exemplary cross-sectional view of the action according to the present invention

Figure 11 (a) to (e) is a cross-sectional view showing the manufacturing step of the caliper housing according to the present invention

12 is a perspective view illustrating a conventional brake caliper

13 is a cross-sectional view showing an air discharge hole opening and closing state by a conventional discharge plug

* Explanation of symbols for main parts of the drawings

10 caliper housing 12 injection part

14: hydraulic passage 16: air discharge hole

18: space portion 19: through hole

191: slope 192: screw connection

193: Cylinder plug 20a, 20b: Pressurized operation part

22: connection frame 30a, 30b: first and second pressure means

32: cylinder 34: piston

36: compression space 40a, 40b: first, second pad plate

42: friction pad 50: connection member

52 transfer unit 54 fixed piece

56: oil ring 60: pad spring

62: spring support pin 64: coupling portion

66: pressurized part 70: discharge plug

70a: contact surface 70b: bonding surface

71: opening and closing end 72: coupling hole

80: disk

Claims (4)

It is fixed to the vehicle body to support the first pad plate 40a, the second pad plate 40b, and the two pad plates 40a and 40b having the friction pad 42 attached to both sides of the disk 80. First and second pressing means 30a and 30b provided at both sides of the caliper housing 10 to press the caliper housing 10 and the two pad plates 40a and 40b toward the disk 80. In the caliper of a vehicle brake comprising: The caliper housing 10 has a space portion 18 having a central portion opened up and down so as to discharge heat to the outside when a friction force is generated at the center and to allow installation of two pad plates 40a and 40b and entry of the disk 80. Is formed and the connecting member 50 for connecting the first and second pressing means (30a, 30b) to the upper portion of the space portion 18 of the caliper housing 10 is bolted to the caliper housing (10) The first and second pressure-operating parts 20a and 20b provided with first and second pressing means 30a and 30b on both side portions of the first and second pressure-operating parts 20a and 20b, and both ends of the connection frame 22 are integrally formed as one body, remind Of the caliper housing (10) A discharge plug 70 for discharging air in the cylinder 32 provided in the first and second pressing means 30a and 30b is formed in a wrench bolt shape so as to be coupled to the coupling hole 72 so as not to be exposed to the outside. The plug 70 has an inner contact surface 70a having a small outer diameter and an outer connection surface 70b formed therein, and an engagement hole 72 inside which the open / close end 71 of the tip of the contact surface 70a is engaged. The air discharge hole 16 is formed in the side leading to the perpendicular to the configuration to discharge the air, The air discharge hole 16, the cylinder 32 of the first pressing means (30a) is formed on the side to be discharged in the vehicle body direction and the cylinder 32 of the second pressing means (30b) is formed below Caliper of the disc brake for a vehicle, characterized in that the configuration to be discharged downward to the outside of the body. delete delete  A step (S1) of forming a unitary body having a first and a second pressurizing part provided with first and second pressurizing means on both sides and a frame connected to both ends; Forming a through hole in the side of the injection part of the first pressing operation part to penetrate the inside of the cylinder and the hydraulic passage provided in the first and second pressing operation parts (S2); Machining inner diameters of both cylinders 32 through the through holes 19 (S3), Forming an inclined surface 191 and a screw coupling part 192 tapered in the direction of the injection part 12 from the inside of the through hole 19 (S4); And a step (S5) of screwing the cylinder plug (193) inside the through hole (19) and welding the outer connection to be sealed with the inside of the cylinder (S5).

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